/Engine/Source/Runtime/SignalProcessing/Public/DSP/DynamicDelayAPF.h
InG is the filter coefficient used in the long delay all pass filter. InMinDelay is the minimum allowable delay of the all pass filter. InMaxDelay is the maximum allowable delay of the all pass filter. InMaxNumInternalBufferSamples is the maximum internal block size used internally. InSampleRate is the current rendering sample rate. Used to convert parameter ease time from seconds to samples.
FDynamicDelayAPF ( float InG, int32 InMinDelay, int32 InMaxDelay, int32 InMaxNumInternalBufferSamples, float InSampleRate )